Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

A Systematic Review of Low-Cost Real-time Air Quality Sensors, Systems, and Evaluation Methods

Version 1 : Received: 15 March 2022 / Approved: 25 March 2022 / Online: 25 March 2022 (15:14:37 CET)

How to cite: Tariq, H.; Touati, F.; Crescini, D.; Mnaouer, A.B. A Systematic Review of Low-Cost Real-time Air Quality Sensors, Systems, and Evaluation Methods. Preprints 2022, 2022030346 (doi: 10.20944/preprints202203.0346.v1). Tariq, H.; Touati, F.; Crescini, D.; Mnaouer, A.B. A Systematic Review of Low-Cost Real-time Air Quality Sensors, Systems, and Evaluation Methods. Preprints 2022, 2022030346 (doi: 10.20944/preprints202203.0346.v1).

Abstract

Air quality and environmental fairness have always been an area of prime interest across the globe. The significance low-cost air quality sensing and practices spikes during the time of pan-demic and epidemics when the air becomes a threat to living beings especially human beings. The gradual innovation and enrichment in low-cost air quality sensing sensors, nodes or devices, and systems are exponentially increasing for the last three decades. This work reviews the major contributions in a) low-cost scalable air quality assessment; b) low-cost air quality sensors, sensing approaches and technologies; c) low-cost state-of-the-art gas sensors fabrication methods (MEMS and CMOS); d) low-cost gas sensors measurement configurations and assemblies; e) low-cost air quality sensors calibration and testing systems; f) low-cost air quality measurement evaluation methods and key performance indicators; and g) machine learning-based evaluation for air quality sensors and measurements. A systematic review of past work with a goal to assist end-users, public health facilities, state agencies, researchers, scientists and air quality protection agencies has been rendered in this work. Starting from sensors electrodes to IoT based mobile smart nodes; all have been introduced in this article.

Keywords

;ow-cost air quality sensors; air quality assessment; sensing technologies (STs); fabrication; measurement; configurations; sensor assemblies; gas sensors calibration systems (GSCS); evaluation; mach

Subject

EARTH SCIENCES, Atmospheric Science

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